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Old 08-21-2016, 12:58 AM   #1
Scooby Newbie
Member#: 444000
Join Date: Apr 2016
Chapter/Region: Tri-State
2017 WRX Limited CVT

Default Rearview mirror upgrade to autodim possible?....

Hello. I may be switching my car order to pick sonething up that is readily available. The 2017 WRX on the lot does not have autodim. Would I be able to purchase the 2017 frameless autodim mirror and install it myself? Is this possible and easy to do for a novice?
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Old 08-21-2016, 03:24 AM   #2
Scooby Specialist
Member#: 389409
Join Date: Apr 2014
Chapter/Region: TXIC
Location: DFW
2017 STI


Yep, my understanding is both the pre-17 (15-16) and '17 models should fit, but double check that. Mirror is available far more cheaply online if you search on the part number. There's basically the Homelink version and non-homelink. The '17 version is frameless and has two way communication (tells you if your garage is going up or down and when it's closed assuming your opener supports that).

H501SVA100 is the part number for the 2017 mirror with homelink. Can be purchased online for around $250ish.

Installation is super easy if you're handy. Pull the dome light cover off (as you would to change bulbs). Remove bulbs, remove the 2 small philips screws holding the dome light trim to the roof. Stick your hand in where the domelight used to be, feel around on your right hand side, you'll find the harness. Remove old mirror, install new mirror, put mirror harness under headliner trim, connect harness to the connector you found earlier. Put cover on to hide wire. Should take less than 30 min tops. Since you pulled out the bulbs in the dome light, replace them with some quality LEDs for a higher end look.

Otherwise tell the dealer to throw it in, or you'll pay $250 or whatever, but they need to install it for you. It's super easy though, and instructions with pictures are online.

Unfortunately Subaru leaves lots of harnesses and stuff around for future upgrades. Why unfortunate? Because you'll decide to upgrade lots of stuff over time

I had the same issue when I bought my '15, cars on the lot didn't have the mirror I wanted. I added it after the fact .. piece of cake! Was going to re-use my '15 mirror on my '17, but saw that the '17 came with a different mirror, didn't know the harnesses were compatible, so did it again on the '17.
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Old 08-21-2016, 09:10 AM   #3
NASIOC Supporter
Member#: 119292
Join Date: Jul 2006
Chapter/Region: South East
Location: Atlantic Beach, FL
2003 WRX
Sonic Yellow


Just as a note to all you folks wanting to upgrade your mirror, you can literally get ANY mirror out of the junk yard and install it. I know the OP is interested in the new frame less Subaru mirror, and I agree it is sharp, but for any other readers, most of the auto dim mirrors are made by the same company.

I am currently running a mirror with auto-dim and a compass from a mid 90's Infinity. It was previously in my 1997 Nissan pickup, and now in my 2005 Baja. They all have a 2 wire harness (1 ground, 1 12 volt switched). If you are looking to gain auto-dim, compass and home link, search you pick and pull. I paid $10 for mine 6 years ago. Cut the wire as far back into the headliner as you can reach. Then splice it into the car. I used the sunroof for power in the Baja, but you can run a switched power source from any where else in the car.

Beware the GM products as most have On-Star and other bits that won't work in your car. The auto-dim on these is built into the mirror, and the compass function is usually the little black box on the back of the mirror. The mounting tabs are not all the same size, so you may need to be creative with a shim, but it is a very easy job.

As for Home link, I know the newer Subaru's have it integrated into the mirror, but most old Fords have it in the sun visor. Grab a sun visor, cut out the switches, and mount wherever you want. Tons of write ups on this on the old inter-webs.
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Old 08-21-2016, 09:54 AM   #4
Scooby Newbie
Member#: 444000
Join Date: Apr 2016
Chapter/Region: Tri-State
2017 WRX Limited CVT


Thanks for the replies. That's good news.
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Old 08-21-2016, 11:06 AM   #5
Scooby Newbie
Member#: 421874
Join Date: May 2015
Chapter/Region: NESIC
2015 WRX STi
Dark Grey Metallic


All here...


Even an eBay vendor I got mine from. There is a harness between the new mirror and existing car harness needed (included when I got mine). Just know this if you go junkyard shopping.

Homelink works perfectly on mine, compass took 5 seconds to calibrate, and how autodim isn't a standard feature is beyond me.
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